Robotic vacuum cleaner



FIG. 1 is a top, front and right-side perspective view of a robotic vacuum cleaner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof, the right side view thereof being a mirror image of the right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a robotic vacuum cleaner, as shown and described. 